A source book of problems for geometry, based upon industrial design and architectural ornament (1912)
Sykes, Mabel, 1868-, Slaught, H. E. (Herbert Ellsworth), 1861-1937, Lennes, N. J. (Nels Johann), 1874- · Boston, Allyn and Bacon · leaf 113
« Shaw (1), PI. xxx. Hartung, Vol. II, PI. 96. 100 MISCELLANEOUS INDUSTRIES EXERCISES113. 1. Give the construction for Fig.90 and prove that the ovals are congruent. •?- 2. If AB = 12, find the area of thefour-pointed figure in the center and ofone of the ovals. H- 3. If AB = a, find these same… … Fig. 90a.— Iron Grills. EXERCISES 114. 1. Draw a network of squares. Draw the diagonals of eachsquare. Prove that these diagonals form two sets of parallel linesthat intersect in squares. See Fig. 91. 2. Draw the diameters of the first set of squares. Compare theareas of squares ABCD, ECFD, and AG…
Geometry · Decoration and ornament
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